using System;

​

enum MyAttributes {

        None = 0,

        Salty,

        Sweet,

        Bitter,

        Sour

    }

internal static class MyAttributesExtension {

        public static MyAttributes MyMethod (this MyAttributes flags, MyAttributes testFlags) {

            return flags | testFlags;

        }

    }

public class Program

{

    public static void Main()

    {

        Console.WriteLine(MyMethod());

    }

}